Update PATH configuration for NixOS

dotfiles/bash_profile

@@ -1 +1 @@
-source ~/.bashrc
+source ~/.lib/login.sh

dotfiles/lib/login.sh

@@ -1,5 +1,6 @@
 source "$HOME/.lib/shellpath.sh"
 
-setup_unless_environment_variable_exists ENV_PATH_SETUP_DONE || _setup_path
+# XXX: This is duplicated from env with a different var to avoid issues with /etc/profile
+command_exists python && setup_unless_environment_variable_exists LOGIN_PATH_SETUP_DONE _setup_path
 
 source_directory_files "$HOME/.lib/login"

dotfiles/lib/nix_login.sh

@@ -0,0 +1,4 @@
+source "$HOME/.lib/shellpath.sh"
+
+command_exists python && setup_unless_environment_variable_exists NIX_PATH_SETUP_DONE _setup_path
+

dotfiles/lib/shellenv.sh

@@ -0,0 +1,12 @@
+source "$HOME/.lib/shellpath.sh"
+
+# XXX: This PATH setup var is only actually set in login.sh which is definitely
+# strange. The reason for this is that because env runs BEFORE profile, things
+# in places like /etc/profile can actually clobber the path setup that we do.
+
+# Disbled setup here. Doing it in profile instead
+if command_exists python; then
+	environment_variable_exists LOGIN_PATH_SETUP_DONE || setup_unless_environment_variable_exists ENV_PATH_SETUP_DONE _setup_path
+fi
+
+source_directory_files "$HOME/.lib/shellenv"

dotfiles/zprofile

@@ -0,0 +1 @@
+source ~/.lib/login.sh